// For flags

CVE-2004-1109

Kerio Personal Firewall 4.1.1 - Multiple IP Options Denial of Service Vulnerabilities

Severity Score

7.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

2
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The FWDRV.SYS driver in Kerio Personal Firewall 4.1.1 and earlier allows remote attackers to cause a denial of service (CPU consumption and system freeze from infinite loop) via a (1) TCP, (2) UDP, or (3) ICMP packet with a zero length IP Option field.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2004-11-12 First Exploit
  • 2004-11-30 CVE Reserved
  • 2004-12-01 CVE Published
  • 2024-08-08 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Kerio
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Personal Firewall
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4.0.6
Search vendor "Kerio" for product "Personal Firewall" and version "4.0.6"
-
Affected
Kerio
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Personal Firewall
Search vendor "Kerio" for product "Personal Firewall"
4.0.7
Search vendor "Kerio" for product "Personal Firewall" and version "4.0.7"
-
Affected
Kerio
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Personal Firewall
Search vendor "Kerio" for product "Personal Firewall"
4.0.8
Search vendor "Kerio" for product "Personal Firewall" and version "4.0.8"
-
Affected
Kerio
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Personal Firewall
Search vendor "Kerio" for product "Personal Firewall"
4.0.9
Search vendor "Kerio" for product "Personal Firewall" and version "4.0.9"
-
Affected
Kerio
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Personal Firewall
Search vendor "Kerio" for product "Personal Firewall"
4.0.10
Search vendor "Kerio" for product "Personal Firewall" and version "4.0.10"
-
Affected
Kerio
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Personal Firewall
Search vendor "Kerio" for product "Personal Firewall"
4.0.16
Search vendor "Kerio" for product "Personal Firewall" and version "4.0.16"
-
Affected
Kerio
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Personal Firewall
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4.1
Search vendor "Kerio" for product "Personal Firewall" and version "4.1"
-
Affected
Kerio
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Personal Firewall
Search vendor "Kerio" for product "Personal Firewall"
4.1.1
Search vendor "Kerio" for product "Personal Firewall" and version "4.1.1"
-
Affected